Brandi Glanville may have a few choice names she wants to call LeAnn Rimes, but the Real Housewives of Beverly Hills star's two sons (with ex Eddie Cibrian, now Rimes' husband) occasionally refer to Rimes with an even more infuriating moniker: Mom.

"Sometimes they'll blurt out: 'Mom!', but I just go with whatever they call me," Rimes told British magazine Fabulous of what Glanville's sons Jake, 5, and Mason, 9, call her. "As long as it's nice and respectful, I couldn't care less."

"They have been very accepting," she continued of her stepsons. "It's taken a while to feel like it's not just Eddie and the two boys and then me. But I do feel that's happening, and the love that I have for them is tremendous."

But though her sons may be welcoming Rimes into the family, Glanville, 40, has been a little less excited about the country singer's progress. During a Jan. 28 Q&A session for her new book, Drinking and Tweeting: And Other Brandi Blunders, Glanville let loose a few explicatives when Rimes' name came up.

"[She] can go f--k herself," Glanville proclaimed, adding jokingly, "Well, she has to, because who would want to?"

For her part, Rimes said, she has come to terms with the consequences of her actions. She and Cibrian, 39, met on the set of their TV movie Northern Lights in 2009, when both were married to other people. Six weeks and one affair later, the pair both filed for divorce and eventually married in 2011.

"Do I wish I handled it differently? Absolutely," the 30-year-old country singer admitted to Fabulous. "No one wants to hurt anyone or put themselves through hurt. I think the only other thing we could've done would have been to get out of our marriages before anything happened. It was tough, and it all happened very fast. I felt so ashamed and guilty."

That stress and anxiety eventually led Rimes to lose a drastic amount of weight -- and eventually landed her in rehab last August. Now, however, Rimes said that she is back on track to a healthy weight and a healthier mindset to deal with haters.

"I never tried to lose weight and I never tried to gain it," she said in defense of her dramatic weight loss in 2011. "It depends on how stressed I am. I was eating a ton and couldn't put on weight!"

"I think a lot of people want you to be human, but you're not allowed to make mistakes," she continued of her rehab revelations. "I'm going to make mistakes -- that's just life. We all want hits, but I truly want to make music I'm proud of."